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photoelectric
[ foh-toh-i-lek-trik ]
photoelectric
/ ˌfəʊtəʊɪlɛkˈtrɪsɪtɪ; ˌfəʊtəʊɪˈlɛktrɪk /
adjective
- of or concerned with electric or electronic effects caused by light or other electromagnetic radiation
photoelectric
/ fō′tō-ĭ-lĕk′trĭk /
- Relating to or exhibiting to electrical effects upon exposure to light. For example, some photoelectric materials emit electrons called photoelectrons upon exposure to certain frequencies of light; others, such as photoresistors and phototransistors, change their electrical properties.
- See also photoelectric effect
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Derived Forms
- ˌphotoeˈlectrically, adverb
- photoelectricity, noun
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Other Words From
- photo·e·lectri·cal·ly adverb
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Word History and Origins
Origin of photoelectric1
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Example Sentences
Or there may be an inelastic collision, when the photon hits an atom and knocks out an electron—the old photoelectric effect.
Two photoelectric robot machine guns followed each movement of the duelists.
He passed his hand rapidly over the photoelectric eye of the commo box.
Here's your photoelectric light key for room 2305 F. That's on the two hundred thirtieth floor.
When I went downstairs he followed me, quietly, and I could feel his wide photoelectric eye-cells upon my back.
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